Issued Patents 2023
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11731858 | Elevator door roller and track replacement | Andrew Goodwin, Charles Mackenzie-Smith | 2023-08-22 |
| 11623846 | Elevator door roller and track replacement | Andrew Goodwin, Charles Mackenzie-Smith | 2023-04-11 |